CN114730578A - 包括双通道前置放大器电路的数据存储设备 - Google Patents

包括双通道前置放大器电路的数据存储设备 Download PDF

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Publication number
CN114730578A
CN114730578A CN202180006469.4A CN202180006469A CN114730578A CN 114730578 A CN114730578 A CN 114730578A CN 202180006469 A CN202180006469 A CN 202180006469A CN 114730578 A CN114730578 A CN 114730578A
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CN
China
Prior art keywords
disk
channel
read
write
head
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CN202180006469.4A
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English (en)
Chinese (zh)
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CN114730578B (zh
Inventor
野田淳三
J·T·孔特雷拉斯
小林正人
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Western Digital Technologies Inc
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Western Digital Technologies Inc
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Publication of CN114730578A publication Critical patent/CN114730578A/zh
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10018—Improvement or modification of read or write signals analog processing for digital recording or reproduction
    • G11B20/10027—Improvement or modification of read or write signals analog processing for digital recording or reproduction adjusting the signal strength during recording or reproduction, e.g. variable gain amplifiers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/29—Structure or manufacture of unitary devices formed of plural heads for more than one track
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59633—Servo formatting
    • G11B5/59655—Sector, sample or burst servo format
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59633—Servo formatting
    • G11B5/59666—Self servo writing

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Digital Magnetic Recording (AREA)
CN202180006469.4A 2020-04-29 2021-02-11 包括双通道前置放大器电路的数据存储设备 Active CN114730578B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US16/861,565 US10896695B1 (en) 2020-04-29 2020-04-29 Data storage device comprising dual channel preamp circuit
US16/861,565 2020-04-29
PCT/US2021/017588 WO2021221757A1 (fr) 2020-04-29 2021-02-11 Dispositif de stockage de données comprenant un circuit de préamplification à double canal

Publications (2)

Publication Number Publication Date
CN114730578A true CN114730578A (zh) 2022-07-08
CN114730578B CN114730578B (zh) 2024-09-17

Family

ID=74180591

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202180006469.4A Active CN114730578B (zh) 2020-04-29 2021-02-11 包括双通道前置放大器电路的数据存储设备

Country Status (4)

Country Link
US (1) US10896695B1 (fr)
CN (1) CN114730578B (fr)
DE (1) DE112021000136T5 (fr)
WO (1) WO2021221757A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10896695B1 (en) * 2020-04-29 2021-01-19 Western Digital Technologies, Inc. Data storage device comprising dual channel preamp circuit

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5375020A (en) * 1990-09-26 1994-12-20 Digital Equipment Corporation Method and apparatus for writing or reading servo information
US5805386A (en) * 1996-12-24 1998-09-08 Texas Instruments Incorporated Dual mode independent suspension read/write head assemblies in a hard disk drive
US6421194B1 (en) * 1999-03-05 2002-07-16 Maxtor Corporation Disk drive head-select verification
US6606216B1 (en) * 1999-05-05 2003-08-12 Maxtor Corporation Transducer head with separate data and servo read elements
US6693760B1 (en) * 2000-03-31 2004-02-17 Western Digital Technologies, Inc. Preamplifier circuit configurable to allow simultaneous read and write operations for self-servo writing a disk drive
US6952322B1 (en) * 2002-11-27 2005-10-04 Western Digital Technologies, Inc. Disk drive reading servo sectors recorded at a relative offset on multiple disk surfaces to increase the servo sample rate
CN1750126A (zh) * 2004-08-31 2006-03-22 株式会社东芝 用于对磁盘驱动器中的写入磁头进行磁化测试的方法和设备
US20070230004A1 (en) * 2006-04-04 2007-10-04 Johnson Yen Read channel/hard disk controller interface including power-on reset circuit
CN101276596A (zh) * 2007-03-30 2008-10-01 株式会社东芝 磁盘驱动器中的多方向自伺服写入
CN103314408A (zh) * 2011-01-19 2013-09-18 马维尔国际贸易有限公司 双通道hdd系统和方法
US9218822B1 (en) * 2015-05-13 2015-12-22 HGST Netherlands B.V. Disk drive with preamplifier with isolation for multiple readers in a slider with a common return signal
US20160155464A1 (en) * 2014-12-01 2016-06-02 Avago Technologies General Ip (Singapore) Pte. Ltd. Systems and Methods for Multi-Path Preamplifier Fault Processing
US10255943B1 (en) * 2018-05-17 2019-04-09 Seagate Technology Llc Independent head, dual reader control logic
US10269385B1 (en) * 2018-06-07 2019-04-23 Western Digital Technologies, Inc. Data storage device switching disk surfaces to perform seek using spiral track

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5430584A (en) * 1991-10-18 1995-07-04 International Microelectronic Products Disk drive interface combining a magneto-resistive read and inductive write circuits
JP3589876B2 (ja) * 1998-10-23 2004-11-17 株式会社日立グローバルストレージテクノロジーズ ディスク装置
US7133233B1 (en) 2000-10-24 2006-11-07 Maxtor Corporation Disk drive with read while write capability
US9679602B2 (en) 2006-06-14 2017-06-13 Seagate Technology Llc Disc drive circuitry swap
US8390948B2 (en) 2010-05-26 2013-03-05 Western Digital Technologies, Inc. Disk drive employing a preamp comprising read/write pass throughs for cascading integrated circuits
US8947816B1 (en) 2013-05-01 2015-02-03 Western Digital Technologies, Inc. Data storage assembly for archive cold storage
US9361919B1 (en) 2014-10-10 2016-06-07 Seagate Technology Llc Disk drive with parallel head actuation
US10896695B1 (en) * 2020-04-29 2021-01-19 Western Digital Technologies, Inc. Data storage device comprising dual channel preamp circuit

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5375020A (en) * 1990-09-26 1994-12-20 Digital Equipment Corporation Method and apparatus for writing or reading servo information
US5805386A (en) * 1996-12-24 1998-09-08 Texas Instruments Incorporated Dual mode independent suspension read/write head assemblies in a hard disk drive
US6421194B1 (en) * 1999-03-05 2002-07-16 Maxtor Corporation Disk drive head-select verification
US6606216B1 (en) * 1999-05-05 2003-08-12 Maxtor Corporation Transducer head with separate data and servo read elements
US6693760B1 (en) * 2000-03-31 2004-02-17 Western Digital Technologies, Inc. Preamplifier circuit configurable to allow simultaneous read and write operations for self-servo writing a disk drive
US6952322B1 (en) * 2002-11-27 2005-10-04 Western Digital Technologies, Inc. Disk drive reading servo sectors recorded at a relative offset on multiple disk surfaces to increase the servo sample rate
CN1750126A (zh) * 2004-08-31 2006-03-22 株式会社东芝 用于对磁盘驱动器中的写入磁头进行磁化测试的方法和设备
US20070230004A1 (en) * 2006-04-04 2007-10-04 Johnson Yen Read channel/hard disk controller interface including power-on reset circuit
CN101276596A (zh) * 2007-03-30 2008-10-01 株式会社东芝 磁盘驱动器中的多方向自伺服写入
CN103314408A (zh) * 2011-01-19 2013-09-18 马维尔国际贸易有限公司 双通道hdd系统和方法
US20160155464A1 (en) * 2014-12-01 2016-06-02 Avago Technologies General Ip (Singapore) Pte. Ltd. Systems and Methods for Multi-Path Preamplifier Fault Processing
US9218822B1 (en) * 2015-05-13 2015-12-22 HGST Netherlands B.V. Disk drive with preamplifier with isolation for multiple readers in a slider with a common return signal
US10255943B1 (en) * 2018-05-17 2019-04-09 Seagate Technology Llc Independent head, dual reader control logic
US10269385B1 (en) * 2018-06-07 2019-04-23 Western Digital Technologies, Inc. Data storage device switching disk surfaces to perform seek using spiral track

Also Published As

Publication number Publication date
CN114730578B (zh) 2024-09-17
WO2021221757A1 (fr) 2021-11-04
DE112021000136T5 (de) 2022-07-07
US10896695B1 (en) 2021-01-19

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